Grasas y Aceites, Vol 53, No 2 (2002)

Reactivity of the biphasic trichloroacetonitrile-CH2Cl2/H2O2 system in the epoxidation of soybean oil


https://doi.org/10.3989/gya.2002.v53.i2.301

Annelise E. Gerbase
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

Márcia C. Brasil
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

José R. Gregório
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

Ana N.F. Mendes
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

Maria Luiza A. von Holleben
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

Márcia Martinelli
Instituto de Química, Universidade Federal do Rio Grande do Sul, Brazil

Abstract


In this work we report on the epoxidation of soybean oil by the trichloroacetonitrile -CH2Cl2/H2O2 byphasic system. The reaction was carried out at room temperature and, most importantly, in non acid conditions which prevent the opening of the oxirane ring. The epoxidized soybean oil was characterized by infrared, 1H and 13C NMR. A maximum conversion of 81 % was achieved in two hours with 86% of selectivity in epoxy groups

Keywords


Biphasic system: Epoxidation; Hydrogen peroxide; Nitrile; Soybean oil

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